import { Tree, SchematicContext } from '@angular-devkit/schematics';
import { JsonValue, JsonAstObject } from '@angular-devkit/core';
export interface NpmRegistryPackage {
    name: string;
    version: string;
}
export declare enum Config {
    PackageJsonPath = "package.json",
    JsonIndentLevel = 4
}
export declare function getLatestNodeVersion(packageName: string): Promise<NpmRegistryPackage>;
export declare function getFileAsJson(host: Tree, path: string): JsonValue;
export declare function addPropertyToPackageJson(tree: Tree, context: SchematicContext, propertyName: string, propertyValue: {
    [key: string]: any;
}): void;
export declare function readPackageJson(tree: Tree): JsonAstObject;